You spell it out so nicely here @taskmaster4450.
What we should perhaps fear most is that the privileged few are by he time the tsunami really strikes so sophisticated that they are empowered to simply eradicate the unemployed masses indiscriminately in ways that will safely clear the land for their own perusal with the aid of their robots.
What they have ruthlessly done over the past half a century or more in terms of unjustified wars is proof that they are spiritually capable of doing just that.
Should that miraculously not happen, we will sit with a huge marauding remnant that will by their desperation through ignorance have no alternative means of survival. We already see signs of that in Africa!